java后台批量下载文件并压缩成zip下载的方法

function doQueryPic() {
 var picsDate = $("#picsDate").val();
 var piceDate = $("#piceDate").val();
 var picInst = $("#pic_inst").combotree("getValue");
 var svrCode = $("#pic_svr_code").val();
 var picsTime = $("#pic_stime").val();
 var piceTime = $("#pic_etime").val();
 if (svrCode == null) {
 $.messager.alert('提示', "请输入交易查询代号");
 return;
 }else{
 $.ajax({
 type: "POST",
 url: 'queryPic.translog.action',
 data: {f_brno:picInst,f_sdate:picsDate,f_edate:piceDate,f_svr_code:svrCode,f_stime:picsTime,f_etime:piceTime},
 success: function(rcdata){
 if(rcdata.success){
 var rows = rcdata.picInfo;
 var detailHtml = "";
  for(var i = 0;i < rows.length;i++){
 detailHtml = detailHtml + ""; 
 }
  detailHtml = detailHtml + "
全选
日期
有无影像
交易名称
交易状态
设备编号
交易代号
所属机构
交易时间
" + rows[i].F_DATE + "
" + rows[i].ISHASIMG + "
" + rows[i].F_TX_NAME + "
" + rows[i].F_STUS + "
" + rows[i].F_DEV_ID + "
" + rows[i].F_SVR_CODE + "
" + rows[i].F_BRNO + "
" + rows[i].F_TIME + "
";
 document.getElementById("details").innerHTML = detailHtml;
  
 }else{
 $.messager.alert('提示',rcdata.errmsg);
 }
 
 },
 error:function(){
 alert("查询失败!");
 }
 });
 }
 
}

//checkbox 全选/取消全选
var isCheckAll = false;
function swapCheck() {
 if (isCheckAll) {
 $("input[type='checkbox']").each(function() {
 this.checked = false;
 });
 isCheckAll = false;
 } else {
 $("input[type='checkbox']").each(function() {
 this.checked = true;
 });
 isCheckAll = true;
 }
}

function downLoadPic() {
 var arr = new Array(); 
 var picIDs = document.getElementsByName("pictureID"); 
 for (i = 0; i < picIDs.length; i++) {  
 if (picIDs[i].checked) {  
 arr.push(picIDs[i].value);  
 } 
 }
 
 if (arr.length <= 0 ) {
 $.messager.alert('提示', "无下载内容！");
 return;
 }else{
 $('#formPic').attr('action','downLoadPic.translog.action');
 $("#formPic").form('submit',{
 onSubmit:function(){
 
 },
 success:function(data){
 $.messager.alert('提示','图片下载成功','info');
 }
 });

 /**
 *$.ajax({
 type: "POST",
 url: 'downLoadPic.translog.action',
 data: {pictureList:JSON.stringify(arr)},
 success: function(rcdata){
 if(rcdata.success){
 $.messager.show({
 title : '成功',
 msg : rcdata.errmsg
 }); 
 }else{
 $.messager.alert('提示',rcdata.errmsg);
 }
 
 },
 error:function(){
 alert("查询失败!");
 }
 }); */
 }
 
}

/**
 * 图片批量下载
 * @param request
 * @param response
 * @return
 * @throws IOException 
 */
 public void downLoadPic(HttpServletRequest request,HttpServletResponse response) throws IOException{
 //Map params = getParameters(request);
 String[] pictureIDs = request.getParameterValues("pictureID");
 Authentication au=getAuthentication(request);
 service.downLoadPic(pictureIDs, au, request, response);
 return ;
 }

public void downLoadPic(String[] params,Authentication au,HttpServletRequest request,HttpServletResponse response) throws IOException {
 
 //压缩文件初始设置
 String path=System.getProperty("ics.webapp.root");//这个是服务器路径地址，request.getSession().getServletContext().getRealPath() 也一样能
 String fileZip = au.getUsername()+"-"+au.getAttribute("F_BRNO")+ "Pictures.zip";
 String filePath = path+"\\" + fileZip;//之后用来生成zip文件
 
 //filePathArr为根据前台传过来的信息，通过数据库查询所得出的pdf文件路径集合（具体到后缀）
 List> fileNameArr = new ArrayList>();
 //JSONArray jsons = JSONArray.fromObject(params.get("pictureList"));
 /**
 *List pictureIDs = new ArrayList();
 for(Object obj:jsons){
 pictureIDs.add(obj.toString());
 }
 */
 for (int i = 0; i < params.length; i++) {
 Map speMap = new HashMap();
 speMap.put("f_date", params[i].substring(0, 8));
 speMap.put("f_ics_batch", params[i].substring(8));
 List> reclists=dao.queryLogInfo(speMap);
 for (int j = 0; j < reclists.size(); j++) {
 fileNameArr.add(reclists.get(j));
 }
 }
 
 //需要压缩的文件--包括文件地址和文件名
 //String[] pathtytytyt ={"D:\\13.jpg","D:\\1212.jpg"};
 // 要生成的压缩文件地址和文件名称
 //String desPath = "D:\\DOWNLOADS\\new.zip";
 File zipFile = new File(filePath);
 ZipOutputStream zipStream = null;
 FileInputStream zipSource = null;
 BufferedInputStream bufferStream = null;
 try {
 //构造最终压缩包的输出流
 zipStream = new ZipOutputStream(new FileOutputStream(zipFile));
 for(int i =0;i 0) {
 rc.put("success", true);
 rc.put("picInfo", picInfolList);
 optLogsvc.saveLog(au.getUsername(), au.getAttribute("F_BRNO"), au.getAttribute("F_LSTIP"),
 TOptlogService.TYPE_MR, "", au.getUsername() + "查询批量下载"+params.get("f_svr_code")+"成功！");
 } else {
 rc.put("success", false);
 rc.put("errmsg", "test info");
 optLogsvc.saveLog(au.getUsername(), au.getAttribute("F_BRNO"), au.getAttribute("F_LSTIP"),
 TOptlogService.TYPE_MR, "", au.getUsername() + "查询批量下载"+params.get("f_svr_code")+"失败！");
 }*/
 optLogsvc.saveLog(au.getUsername(), au.getAttribute("F_BRNO"), au.getAttribute("F_LSTIP"),
 TOptlogService.TYPE_MR, "", au.getUsername() + "批量下载图片"+fileZip+"成功！");
 return ;
 }